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» Educated guess on graphical authentication schemes: vulnerab...
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SOUPS
2009
ACM
14 years 5 months ago
Educated guess on graphical authentication schemes: vulnerabilities and countermeasures
This paper investigate security of graphical authentication tokens against educated guess attacks. Results of two user studies indicate that, if we use original photos as authenti...
Eiji Hayashi, Jason Hong, Nicolas Christin
CHI
2011
ACM
13 years 2 months ago
Security through a different kind of obscurity: evaluating distortion in graphical authentication schemes
While a large body of research on image-based authentication has focused on memorability, comparatively less attention has been paid to the new security challenges these schemes m...
Eiji Hayashi, Jason Hong, Nicolas Christin
CORR
2010
Springer
212views Education» more  CORR 2010»
13 years 11 months ago
Cryptanalysis of a more efficient and secure dynamic id-based remote user authentication scheme
In 2004, Das, Saxena and Gulati proposed a dynamic ID-based remote user authentication scheme which has many advantage such as no verifier table, user freedom to choose and change...
Mohammed Aijaz Ahmed, D. Rajya Lakshmi, Sayed Abdu...